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Systemic Biochemical Signature and Functional Quality Index of Calcaneal Bone Marrow Aspirate in Adults Undergoing Foot or Ankle Surgery (IQF-BMA)

30 augustus 2026 bijgewerkt door: Universidade Sao Francisco

Systemic Biochemical Signature in Adults Undergoing Foot or Ankle Surgery: Integrating Routine Laboratory Markers to Assess the Functional Quality of Calcaneal Bone Marrow Aspirate Mesenchymal Stem Cells in a Prospective Cohort

This observational prospective cohort study will evaluate whether routine blood tests are associated with the functional quality of calcaneal bone marrow aspirate mesenchymal stem cells in adults undergoing clinically indicated foot or ankle surgery at a university hospital in Brazil. Participants aged 40 to 80 years, with or without comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers, will be eligible for inclusion.

Before surgery, participants will undergo routine blood tests, including complete blood count, glucose and lipid profile, mineral-renal markers, and tissue damage markers. During the clinically indicated surgery, calcaneal bone marrow aspirate will be collected from the same operative field. Mesenchymal stem cells will be isolated and evaluated in the laboratory for clonogenic capacity, osteogenic and adipogenic differentiation, cellular senescence, and secretion of inflammatory and anti-inflammatory cytokines.

A composite Functional Quality Index of Bone Marrow Aspirate (IQF-BMA) will be constructed from routine laboratory markers to characterize inflammatory, metabolic, mineral-renal, and tissue-damage burden. The primary objective is to examine the association between the IQF-BMA and mesenchymal stem cell functional outcomes, particularly clonogenic capacity. This exploratory study will not be used to guide individual treatment decisions.

Studie Overzicht

Gedetailleerde beschrijving

This is a single-center, observational, prospective cohort study conducted at a university hospital in Brazil. The study will enroll 40 adults aged 40 to 80 years who are undergoing clinically indicated foot or ankle surgery. Participants may present with or without comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers. These clinical characteristics will be recorded as observational variables and will not define intervention assignments or separate study arms. All participants will provide written informed consent before any study procedures.

Before surgery, participants will undergo a panel of routine laboratory tests covering four domains: inflammatory burden, including complete blood count, derived inflammatory indices, and albumin; glycometabolic burden, including fasting glucose, oral glucose tolerance test when clinically feasible, HbA1c, triglycerides, and cholesterol profile; mineral-renal burden, including creatinine, urea, ionized calcium, phosphorus, magnesium, alkaline phosphatase, parathyroid hormone, and 25-OH vitamin D; and tissue-energetic damage, including lactate dehydrogenase, AST, and ALT.

During the clinically indicated orthopedic surgery, calcaneal bone marrow aspirate will be collected from the same operative field. Mesenchymal stem cells will be isolated, cultured, and evaluated using standardized functional assays, including clonogenic capacity, osteogenic differentiation, adipogenic differentiation, cellular senescence, cytokine secretion, and cellular viability.

The Functional Quality Index of Bone Marrow Aspirate (IQF-BMA) will be constructed from standardized routine laboratory variables representing inflammatory, glycometabolic, mineral-renal, and tissue-energetic domains. The primary analysis will examine the association between the IQF-BMA and the clonogenic capacity of calcaneal bone marrow mesenchymal stem cells. Secondary analyses will examine associations between laboratory markers or the composite index and other cellular functional outcomes. Results will be reported primarily as effect estimates and 95% confidence intervals to support the planning of future, larger studies.

Studietype

Observationeel

Inschrijving (Geschat)

40

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

    • São Paulo
      • Bragança Paulista, São Paulo, Brazilië, 12916900

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Ja

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

Adults aged 40 to 80 years undergoing clinically indicated foot or ankle surgery at a university hospital in Brazil. Participants may have comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers. All participants will undergo standardized preoperative blood collection and intraoperative calcaneal bone marrow aspirate collection for observational laboratory analyses.

Beschrijving

Inclusion Criteria

  • Age 40 to 80 years.
  • Scheduled for clinically indicated foot or ankle surgery at the participating university hospital.
  • Ability to understand the study procedures and provide written informed consent.
  • Willingness to provide preoperative blood samples and intraoperative calcaneal bone marrow aspirate according to the study protocol.
  • Participants may have comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers. These clinical characteristics will be recorded for observational analyses and do not define separate study groups.

Exclusion Criteria

  • Critical limb ischemia without revascularization options or hemodynamic instability.
  • Active systemic infection or sepsis at the time of enrollment.
  • End-stage renal disease requiring dialysis.
  • Current use of high-dose systemic corticosteroids or other immunosuppressive drugs.
  • Current or recent malignancy within the last 5 years, except adequately treated non-melanoma skin cancer.
  • Significant cognitive impairment or psychiatric condition that, in the opinion of the investigator, precludes informed consent or adherence to study procedures.
  • Pregnancy or breastfeeding.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Foot/Ankle Surgery Cohort
Adults undergoing clinically indicated foot or ankle surgery at a university hospital in Brazil, with or without comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers. Blood samples and calcaneal bone marrow aspirate will be collected for systemic laboratory tests and mesenchymal stem cell functional assays.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Clonogenic capacity of calcaneal bone marrow mesenchymal stem cells (CFU-F)
Tijdsspanne: Up to 14 days after bone marrow aspirate collection.
Number of colony-forming unit fibroblasts (CFU-F) per milliliter of calcaneal bone marrow aspirate, quantified in primary culture under standardized conditions.
Up to 14 days after bone marrow aspirate collection.

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Osteogenic and adipogenic differentiation of mesenchymal stem cells
Tijdsspanne: Up to 28 days after bone marrow aspirate collection.
Osteogenic and adipogenic differentiation capacity of calcaneal bone marrow mesenchymal stem cells, assessed by alkaline phosphatase activity and semi-quantitative scoring of Alizarin Red and Oil Red O staining.
Up to 28 days after bone marrow aspirate collection.

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Onderzoekers

  • Hoofdonderzoeker: Vanessa Bertolucci, PhD Candidate, Universidade Sao Francisco

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

20 september 2026

Primaire voltooiing (Geschat)

1 juli 2028

Studie voltooiing (Geschat)

1 juni 2029

Studieregistratiedata

Eerst ingediend

30 augustus 2026

Eerst ingediend dat voldeed aan de QC-criteria

30 augustus 2026

Eerst geplaatst (Werkelijk)

3 september 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

3 september 2026

Laatste update ingediend die voldeed aan QC-criteria

30 augustus 2026

Laatst geverifieerd

1 augustus 2026

Meer informatie

Termen gerelateerd aan deze studie

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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